GB872334A - Method of and apparatus for producing a dry product by spray drying - Google Patents

Method of and apparatus for producing a dry product by spray drying

Info

Publication number
GB872334A
GB872334A GB18724/58A GB1872458A GB872334A GB 872334 A GB872334 A GB 872334A GB 18724/58 A GB18724/58 A GB 18724/58A GB 1872458 A GB1872458 A GB 1872458A GB 872334 A GB872334 A GB 872334A
Authority
GB
United Kingdom
Prior art keywords
particles
drying
sieve
diameter
sprayed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB18724/58A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF Schweiz AG
Original Assignee
Ciba AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ciba AG filed Critical Ciba AG
Publication of GB872334A publication Critical patent/GB872334A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • C09B67/0001—Post-treatment of organic pigments or dyes
    • C09B67/0003—Drying, e.g. sprax drying; Sublimation of the solvent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/16—Evaporating by spraying
    • B01D1/18—Evaporating by spraying to obtain dry solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
    • B01J2/04—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Glanulating (AREA)

Abstract

<PICT:0872334/III/1> In the spray-drying of liquid solutions or suspensions or of filter cake, a collecting member is arranged in the drying chamber in the path of the sprayed particles at a point where drying is well advanced, and material adhering to the member is removed mechanically, by vibrating; larger particles are thus obtained than if the particles are completely dried. The liquid or filter cake to be dried, e.g. a suspension of a dye, is sprayed by stationary nozzles or by means of the rotating disc 12. Hot air flows through the duct 16 and dries the particles. The collecting member 24 may be a sieve having a fine mesh, e.g. of the same order as the particles striking it, or may have a roughened, e.g. sand-blasted, surface. With the usual round drying tower the diameter of the collecting member should be at least half the diameter of the tower. The member is periodically or continuously vibrated, e.g. by magnetic means 26. The member is also preferably periodically moved slowly in a direction transverse to the plane of the sprayed particles, i.e. in the direction of the arrow 28. In an example using a laboratory spray-drier 60 centimetres long and 27 centimetres in diameter and using a nozzle spray, a metal sieve, mesh size 0.3 mm., is arranged at about the middle. Without the sieve, in drying a suspension of a dye, particle sizes of 0.20 mm. are obtained; with the sieve which is vibrated every 3 seconds, particles of 0.30 mm. are obtained.
GB18724/58A 1957-06-12 1958-06-11 Method of and apparatus for producing a dry product by spray drying Expired GB872334A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH872334X 1957-06-12

Publications (1)

Publication Number Publication Date
GB872334A true GB872334A (en) 1961-07-05

Family

ID=4544132

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18724/58A Expired GB872334A (en) 1957-06-12 1958-06-11 Method of and apparatus for producing a dry product by spray drying

Country Status (4)

Country Link
CH (1) CH353678A (en)
DE (1) DE1085468B (en)
FR (1) FR1208398A (en)
GB (1) GB872334A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2148139A (en) * 1983-10-03 1985-05-30 Pall Corp Fluid purifier
US5624530A (en) * 1993-05-11 1997-04-29 Ultrasonic Dryer, Ltd. Spray drying system
CN113230680A (en) * 2021-05-13 2021-08-10 张飞 High-performance concrete retarder preparation system and preparation method
CN113577804A (en) * 2021-06-29 2021-11-02 中国神华煤制油化工有限公司 Spray drying device
CN117772055A (en) * 2024-02-28 2024-03-29 西北农林科技大学 Hydrolysis tannic acid low temperature condensation spraying coating device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2263968C3 (en) * 1972-12-29 1984-09-13 Basf Ag, 6700 Ludwigshafen Process for the preparation of non-dusting or practically non-dusting dye grains
WO1998001224A1 (en) * 1996-07-04 1998-01-15 Nikolai Ivanovich Kuchersky Centrifugal grinder
CN116786023A (en) * 2023-06-12 2023-09-22 江西瑞龙药业有限公司 Polygonatum sibiricum extract extraction equipment and extraction method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE887178C (en) * 1939-02-08 1953-08-20 Metallgesellschaft Ag Device for post-treatment, cooling or clearing of dry goods in spray dryers
CH215133A (en) * 1939-03-20 1941-06-15 Metallgesellschaft Ag Method and device for reducing the formation of dust and thus for achieving a more uniform grain formation in the spray drying of liquid substances.

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2148139A (en) * 1983-10-03 1985-05-30 Pall Corp Fluid purifier
US4604109A (en) * 1983-10-03 1986-08-05 Pall Corporation Fluid purifier
US5624530A (en) * 1993-05-11 1997-04-29 Ultrasonic Dryer, Ltd. Spray drying system
CN113230680A (en) * 2021-05-13 2021-08-10 张飞 High-performance concrete retarder preparation system and preparation method
CN113577804A (en) * 2021-06-29 2021-11-02 中国神华煤制油化工有限公司 Spray drying device
CN117772055A (en) * 2024-02-28 2024-03-29 西北农林科技大学 Hydrolysis tannic acid low temperature condensation spraying coating device
CN117772055B (en) * 2024-02-28 2024-05-10 西北农林科技大学 Hydrolysis tannic acid low temperature condensation spraying coating device

Also Published As

Publication number Publication date
FR1208398A (en) 1960-02-23
DE1085468B (en) 1960-07-14
CH353678A (en) 1961-04-15

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